what kind of FPR?
#5
so whats the point of getting a guage and adjustable FPR just to set it to stock?
Raising fuel pressure is a crappy way of squeezing a little more out of maxed out injectors, instead of raising the fuel pressure, i'd get bigger injectors.....then you'll be running your injectors at a lower duty cycle (which is easier on the injectors) and at a normal/sane fuel pressure (which is easier on the fuel pump).
Raising fuel pressure is a crappy way of squeezing a little more out of maxed out injectors, instead of raising the fuel pressure, i'd get bigger injectors.....then you'll be running your injectors at a lower duty cycle (which is easier on the injectors) and at a normal/sane fuel pressure (which is easier on the fuel pump).
#7
hells ya you do.
Anytime you switch injectors you need to tune the car, or at an absolute bare minimum get a basemap set up for the larger injectors.
If you use 370cc injectors on an ecu setup for 240cc the 370cc injectors will be dumping way too much fuel b/c the ecu thinks the injectors are 240cc so it keeps them open as long as it would need for the 240s to deliver the right amount of fuel, but if in reality they're 370cc the injectors will stay open for too long, dumping in too much fuel.
Set the ecu up for 370cc injectors and the ecu will shorten the injectors pulsewidth, thus delivering less fuel.
To summarize.
different injectors = tune
different cams = tune
add a turbo/supercharger = tune
raise the compression = tune
build a frankenstein engine (lsvtec or b20vtec) = tune
If you do any of the above mentioned things and don't tune, you're taking a chance on how well the car will run and how safe it will be.
Sure you can install some 370cc injectors on a stock ecu, and it most likely WILL run, but it'll run pretty crappy and smoke lots of black smoke.
Anytime you switch injectors you need to tune the car, or at an absolute bare minimum get a basemap set up for the larger injectors.
If you use 370cc injectors on an ecu setup for 240cc the 370cc injectors will be dumping way too much fuel b/c the ecu thinks the injectors are 240cc so it keeps them open as long as it would need for the 240s to deliver the right amount of fuel, but if in reality they're 370cc the injectors will stay open for too long, dumping in too much fuel.
Set the ecu up for 370cc injectors and the ecu will shorten the injectors pulsewidth, thus delivering less fuel.
To summarize.
different injectors = tune
different cams = tune
add a turbo/supercharger = tune
raise the compression = tune
build a frankenstein engine (lsvtec or b20vtec) = tune
If you do any of the above mentioned things and don't tune, you're taking a chance on how well the car will run and how safe it will be.
Sure you can install some 370cc injectors on a stock ecu, and it most likely WILL run, but it'll run pretty crappy and smoke lots of black smoke.
#8
im going to be running 550cc injectors and am hoping for around 250whp on my stock motor.... will that require a fpr? if not and i just need a re-tune will the stock fuel pump be adequate as well?
#10
Originally posted by 187Chor
im going to be running 550cc injectors and am hoping for around 250whp on my stock motor.... will that require a fpr? if not and i just need a re-tune will the stock fuel pump be adequate as well?
im going to be running 550cc injectors and am hoping for around 250whp on my stock motor.... will that require a fpr? if not and i just need a re-tune will the stock fuel pump be adequate as well?
You do need a better pump.
550's for 250whp will be absouletly fine.
#11
Originally posted by zeeman
hells ya you do.
Anytime you switch injectors you need to tune the car, or at an absolute bare minimum get a basemap set up for the larger injectors.
If you use 370cc injectors on an ecu setup for 240cc the 370cc injectors will be dumping way too much fuel b/c the ecu thinks the injectors are 240cc so it keeps them open as long as it would need for the 240s to deliver the right amount of fuel, but if in reality they're 370cc the injectors will stay open for too long, dumping in too much fuel.
Set the ecu up for 370cc injectors and the ecu will shorten the injectors pulsewidth, thus delivering less fuel.
To summarize.
different injectors = tune
different cams = tune
add a turbo/supercharger = tune
raise the compression = tune
build a frankenstein engine (lsvtec or b20vtec) = tune
If you do any of the above mentioned things and don't tune, you're taking a chance on how well the car will run and how safe it will be.
Sure you can install some 370cc injectors on a stock ecu, and it most likely WILL run, but it'll run pretty crappy and smoke lots of black smoke.
hells ya you do.
Anytime you switch injectors you need to tune the car, or at an absolute bare minimum get a basemap set up for the larger injectors.
If you use 370cc injectors on an ecu setup for 240cc the 370cc injectors will be dumping way too much fuel b/c the ecu thinks the injectors are 240cc so it keeps them open as long as it would need for the 240s to deliver the right amount of fuel, but if in reality they're 370cc the injectors will stay open for too long, dumping in too much fuel.
Set the ecu up for 370cc injectors and the ecu will shorten the injectors pulsewidth, thus delivering less fuel.
To summarize.
different injectors = tune
different cams = tune
add a turbo/supercharger = tune
raise the compression = tune
build a frankenstein engine (lsvtec or b20vtec) = tune
If you do any of the above mentioned things and don't tune, you're taking a chance on how well the car will run and how safe it will be.
Sure you can install some 370cc injectors on a stock ecu, and it most likely WILL run, but it'll run pretty crappy and smoke lots of black smoke.
#14
i heard that if you use a stock fpr, cylinder #1 has a chance of running lean.... how true is this?
bananax i plan on running higher boost once the internal are upgraded by next spring, infact i hope the 550's will be big enough..
bananax i plan on running higher boost once the internal are upgraded by next spring, infact i hope the 550's will be big enough..
#17
Originally posted by brianmcgaugh
Always go over kill on injectors
Always go over kill on injectors
Anytime you boost anything, you need to make sure your fuel system is more than able to supply enough fuel. Also it gives you the option to upgrade for more power down the road.
Thread
Thread Starter
Forum
Replies
Last Post
79camaro
Honda Civic (+ other) Parts/Accessories for Sale or Trade
3
25-Apr-2004 09:24 PM
ElitE Perf.
Honda Civic (+ other) Parts/Accessories for Sale or Trade
11
02-Apr-2004 06:47 PM
imported_EKR
Honda Civic (+ other) Parts/Accessories for Sale or Trade
1
08-Mar-2004 11:31 PM
imported_Slvr-Bullet
Honda Civic Performance - JDM Discussion
13
05-Aug-2003 03:47 PM